[jboss-jira] [JBoss JIRA] (WFLY-12032) Follow-up: java.rmi is not visible from EJBServerChannel

It should actually already be set by the deserialization code.

If you actually look at the source code of `MarshalInputStream` and follow what it's doing, it uses `jdk.internal.misc.VM#latestUserDefinedLoader0` to determine the class loader to use. This method searches the call stack for the class loader that it thinks the user meant to use. Unfortunately that's never going to give the right answer.

Follow-up: java.rmi is not visible from EJBServerChannel -------------------------------------------------------- Key: WFLY-12032 URL: https://issues.jboss.org/browse/WFLY-12032 Project: WildFly Issue Type: Bug Affects Versions: 16.0.0.Final Reporter: Tomas Hofman Priority: Major This is follow up issue for JBEAP-16725, which was resolved with a workaround - javax.rmi was added as a dependency of wildfly.extension.io module. The root cause is probably inside jboss-modules. The issue is following: * a standalone EJB client invokes remote EJB, and passes an object as an argument; * server (trying to use the remote object) fails with "java.lang.ClassNotFoundException: java.rmi.dgc.Lease" (stacktrace bellow). If a short delay ({{Thread.sleep(100)}}) is introduced on the server side, before manipulating the remote object, the invocation succeeds. {code} java.lang.ClassNotFoundException: java.rmi.dgc.Lease from [Module "org.wildfly.extension.io" version 6.0.12.Final-redhat-00001 from local module loader @6a024a67 (finder: local module finder @7921b0a2 (roots: /tmp/jboss-eap-7.2/modules,/tmp/jboss-eap-7.2/modules/system/layers/base))] (no security manager: RMI class loader disabled) (default task-2) java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:97) (default task-2) sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:396) (default task-2) sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:186) (default task-2) java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637) (default task-2) java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264) (default task-2) sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:219) (default task-2) java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1868) (default task-2) java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751) (default task-2) java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042) (default task-2) java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573) (default task-2) java.io.ObjectInputStream.readObject(ObjectInputStream.java:431) (default task-2) sun.rmi.transport.DGCImpl_Stub.dirty(DGCImpl_Stub.java:125) (default task-2) sun.rmi.transport.DGCClient$EndpointEntry.makeDirtyCall(DGCClient.java:382) (default task-2) sun.rmi.transport.DGCClient$EndpointEntry.registerRefs(DGCClient.java:324) (default task-2) sun.rmi.transport.DGCClient.registerRefs(DGCClient.java:160) (default task-2) sun.rmi.transport.LiveRef.read(LiveRef.java:312) (default task-2) sun.rmi.server.UnicastRef.readExternal(UnicastRef.java:489) (default task-2) java.rmi.server.RemoteObject.readObject(RemoteObject.java:455) (default task-2) sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2) (default task-2) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) (default task-2) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) (default task-2) java.lang.reflect.Method.invoke(Method.java:498) (default task-2) org.jboss.marshalling.reflect.JDKSpecific$SerMethods.callReadObject(JDKSpecific.java:179) (default task-2) org.jboss.marshalling.reflect.SerializableClass.callReadObject(SerializableClass.java:212) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1746) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1715) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1715) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1395) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:272) (default task-2) org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:205) (default task-2) org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41) (default task-2) org.jboss.ejb.protocol.remote.EJBServerChannel$RemotingInvocationRequest.getRequestContent(EJBServerChannel.java:813) (default task-2) org.jboss.as.ejb3.remote.AssociationImpl.receiveInvocationRequest(AssociationImpl.java:130) (default task-2) org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleInvocationRequest(EJBServerChannel.java:451) (default task-2) org.jboss.ejb.protocol.remote.EJBServerChannel$ReceiverImpl.handleMessage(EJBServerChannel.java:189) (default task-2) org.jboss.remoting3.remote.RemoteConnectionChannel.lambda$handleMessageData$3(RemoteConnectionChannel.java:430) (default task-2) org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:949) (default task-2) org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) (default task-2) org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) (default task-2) org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) (default task-2) org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) (default task-2) java.lang.Thread.run(Thread.java:748) {code}